Opinion: Why are we still getting so many robocalls?

One morning about three weeks ago, at 5:45 a.m., the robocallers came for me. My cellphone rang. And rang. It hasn’t stopped. The calls claim to come from all over the world. Sometimes they ring once, and stop. Sometimes twice. Rarely more than that. If I answer, I am sometimes told I owe money…
Source: Morningcall